JSON Formatter and Validator
Paste your JSON, format it with clean indentation, minify or validate it — all in your browser.
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Frequently asked questions
What do "format" and "minify" JSON mean?
Format (or "beautify") adds line breaks and indentation to make the JSON readable. Minify removes all spaces and line breaks to make the file as small as possible — ideal for production.
How do I know if my JSON is valid?
Just paste it: the status bar shows “Valid JSON” in green or points out the error with the exact position in red, so you can fix it quickly.
Is my data sent to any server?
No. All processing happens in your own browser — your JSON never leaves your computer.
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